Toronto-born Robertson and the famed Canadian ensemble will be the focus of the upcoming film Once Were Brothers: Robbie Robertson and the Band, which will be executive produced by Scorsese, Grazer and Howard, Deadline reports. Daniel Roher will direct the film, and it will be a co-production between Imagine Documentaries, White Pine Pictures, Bell Media Studios and Universal Music Canada's Shed Creative.

Once Were Brothers is inspired by Robertson's 2017 bestselling memoir Testimony, with the film described by Deadline as "a confessional, cautionary, and sometimes humorous tale of Robertson's young life and the creation of one of the most enduring groups in the history of popular music."

It will blend archival footage and interviews with various friends and collaborators of Robertson, including Bruce Springsteen, Eric Clapton, Van Morrison, Scorsese, Taj Mahal, Peter Gabriel, David Geffen and Ronnie Hawkins.

Robertson told Deadline he is "honored to have my memoir, Testimony, made into a documentary film by such an extraordinarily talented creative team."

"Robbie and the Band are the stuff of rock'n'roll mythology," said Imagine Documentaries president Justin Wilkes. "As a Woodstock native, the Big Pink house loomed large in my cultural psyche growing up and like many, many others, the music sure made a lasting impression. The gospel according to Robbie is a wild, cinematic ride and we here at Imagine are honored to partner with Daniel and an illustrious band of producers in sharing Robbie's story with the world."

Once Were Brothers is set to be released theatrically in the fall, and then it will be on Crave early next year.